Bimetal Thermometers- Series BT
2", 3" or 5" Dial, Dual Scale, ±1% FS Accuracy, External Reset.
Series BT Bimetal Thermometers offer accurate, reliable service even in the toughest environments. These corrosion resistant units are constructed form stainless steel and hermetically sealed to prevent crystal fogging. The bimetal element directly drives pointer, eliminating gears and linkage. An external reset screw allows field calibration and easy-to-read aluminum dial minimizes parallax error. Choose back connection or adjustable angle for easy viewing and installation. Adjustable models can be rotated a full 360° and tilted over a 180° arc. NOTE: When using in pressurized applications, use a suitable thermowell.
| Accuracy: | ±1% full scale |
|---|---|
| Response Time: | < 40 seconds |
| Maximum Head Temperature: | 200°F (93°C) |
| Maximum Stem Temperature: | Not to exceed 50% over-range or 1000°F (538°C) or 800°F (427°C) continuously |
| Immersion Depth: | Minimum 2" in liquids, 4" in gas |
| Stem Diameter: | ¼" O.D. |
| Materials of Construction: | 304 stainless steel stem, glass crystal, anodized aluminum dial, Series 300 stainless steel head, bezel and mounting bushing |
| Process Connection: | ½" NPT |
| Model Number | Dial Size, Stem Length |
Temperature Range, °F(°C) |
Degree Div., °F(°C) |
|---|---|---|---|
| Back Connection | |||
| BTB2405D BTB2409D BTB3255D BTB3405D BTB3605D BTB3407D |
2", 4" 2", 4" 3", 2 ½" 3", 4", 3", 6" 3", 4" |
0/250 (-20/120) 200/1000 (100/500) 0/250 (-20/120) 0/250 (-20/120) 0/250 (-20/120) 50/500 (10/260) |
2 (2) 10 (5) 2 (2) 2 (2) 2 (2) 5 (5) |
| Adjustable Angle Connection | |||
| BTA5405D BTA5605D |
5", 4" 5", 6" |
0/250 (-20/120) 0/250 (-20/120) |
2 (2) 2 (2) |
APPLICATIONS
Temperature measurement in boilers, burners, ducts, air consitioning systems, furnaces, manifolds, stacks, steam generators, ventilation systems, refrigeration systems, piping, grain elevators, tanks, or any process application.
SUGGESTED SPECIFICATIONS :
Bimetal thermometer shall have a direct driven pointer, dual scale dial and ±1% full scale accuracy. Thermometer shall be hermetically sealed with an external reset. Stem shall be constructed of 304 Stainless Steel. Thermometer shall be Dwyer Model No. BT____.